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J2548_200104 - Test Method to Obtain Lug-Up Torque Data for Heavy-Duty Truck and Bus Engines

Details
Document Number: J2548_200104
Revision Number:
Title
Test Method to Obtain Lug-Up Torque Data for Heavy-Duty Truck and Bus Engines
Scope
This SAE Recommended Practice applies to all forms of diesel and natural gas engines fueled by the combination of diesel fuel and natural gas. This document provides a method to determine the torque generating capability of an engine as it accelerates away from idle at a specified acceleration rate. The data is typically used to aid in the proper matching of the engine to the available torque converters of a torque converter equipped transmission. The goal is to achieve acceptable off-idle transient engine acceleration against the load of a torque converter equipped vehicle as it moves away from a stop.
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